Equipped for the job
Broadband and answerphones
In today's world of email communication and vast web resources you almost certainly need a broadband connection. You will need to think about how the phone is answered when you aren't there, but you can set the tone of your business by having a cheerful and short message.
If possible, try to use a different computer than the rest of your family. Children on the office computer are a particular hazard and you should try to establish a strict separation between work and home computers.
